Slicing machine



March 13, 1934. c, LTER 1,950,530

SLICING MACHINE Filed June 29. 1931 2 Sheets-Sheet 1 mf ww av,

INVENTOR e @m ATTORNEY Patented Mar. 13, 1934 UNETED STATES SLICINGMACHINE Charles T. Walter, Chicago, Ill., assignor, by

mesne assignments, to Industrial Patents Corporation, Chicago, Ill.,

a corporation of Dela- Application June 29, 1931, Serial No. 547,495

9 Claims.

The invention relates to a slicing machine and more particularly to themeans associated with the carriage or article feed whereby provision ishad for automatically or manually throwing the 6 feed drive out of gearto prevent injury to the machine or parts thereof.

The invention provides a slicing machine feed mechanism which is at alltimes under control to be thrown into or out of action as requiredwithout affecting the slicing or cutting mechanism and which assures theautomatic stopping of the carriage when approaching the limit of itsforward feeding movement, thereby obviating damage to the cutter orother part of the machine.

The invention is designed for general use in slicing machines, hencainadapting the same for a particular make or type of machine, it will bereadily understood that changes may be resorted to within the scope ofthe appended claims without departing from the nature of the invention.

For a full understanding of the invention and the merits thereof,reference is to be had to the drawings hereto attached and the subjoineddescription, in which corresponding parts are designated in the severalviews of the drawings and referred to in the specification by likereference characters. v

In the drawings:

Figure 1 is a side elevation of a carriage and associated partsillustrative of an embodiment of the invention.

Fig. 2 is an end view of the parts shown in Fig. 1.

Fig. 3 is a view similar to Fig. 2 as seen from the opposite end.

Fig. i is a detail view of the pivoted stop and attached arm forautomatically throwing the carriage out of gear to arrest its advance.

The numeral 1 designates the body of the carriage formed with opposedaligned sleeves 2 through which passes a longitudinally extending feedscrew 3. A bracket 4 forms in effect a 45 part of the carriage andreceives a holder 5 for receiving the article to be sliced. The numeral6 designates a table or other fixed part of the machine frame disposedbeneath the holder 5 and to which is attached a notched plate or strip7. A shaft 8 is mounted in webs of the bracket 4 and receives atransversely positionable nut section 9 which is secured thereto to movetherewith. A handleli) is fast to the nut section 9 and providesconvenient means for manipulation thereof.

The nut section is disposed between the sleeves 2 and is formed withthreaded segments to match and coact with the screw threads of the feedscrew 3 to advance the carriage in a longitudinal direction when themachine is in active operation. A coiled spring 11 is mounted on an endportion of the shaft 8 and is secured thereto at one end, its oppositeend being engaged with the carriage in any manner.

This spring 11 is torsionally tensioned to normally hold the feed nutsection 9 transversely positioned away from and out of engagement withthe longitudinally extending feed screw. As has just been indicated thespring 11 provides means that continuously presses the nut section in adirection from the position Whereat the nut section engages the feedscrew. The spring 11 however provides means which is yieldable so as topermit the nut section to be forcibly moved against the constantpressure of the spring to and into the position whereat the nut sectionengages the feed screw. Consequently the spring 11 may be considered asbroadly providing yieldable pressing means by which the nut section isconstantly pressed in a transverse direction leading from the screwengaging or operating position for the nut member towards the normal orinoperative position for the nut member, towit towards that position inwhich it is impossible for the nut section to be engaged by the feedscrew as the latter rotates. A stop 12 which is slidably mounted in oneof the bracket webs and which is movable in the direction of themovement of the carriage projects across the path of the nut section 9and holds it in engagement with the feed screw against the tension ofthe spring .90 11. The stop 12 is sometimes referred to as the holdingstop and it may be referred to as a locking stop on a member movablymounted on and relative to the carriage body 1. The member whichcomprises the holding stop 12 as a part thereof comprises not only themember 12 but also the parts 13 and 14 hereinafter referred to.

An arm 13 receives the stop 12 and is connected to an operating rod 14slidably mounted in the bracket webs and also movable in the directionof the movement of the carriage. An expansible helical spring 15 ismounted on the rod 14 and normally urges it in one direction with thestop 12 projected in the path of the nut section 9. A lever 16 coactswith an element 17 connected with the arm 13 to admit of sliding the bar14 to throw the stop 12 out of the path of the nut section 9 to stop thefeed of the carriage at will.

A stop or abutment 18 is mounted so as to permit a limited angularmovement necessary for the full functioning of the particular stop orabutment 18 and of an arm 19 thereupon is disposed in the path of thebar 14 to be engaged thereby and automatically throw the carriage out ofgear by effecting a withdrawal of the stop 2 out of the path of t e feednut section 9. The arm 19 projects from the stop 18 and is disposed inthe path of a finger 20 or like part projecting from the feed nutsection 9 to positively actuate the same in the event of the spring 11failing to function from any cause, thereby guarding against damagewhich would result from an overfeed of the carriage. The stop 18 ismounted upon a fixed part of the machine and not upon the carriage.

Ihe stop 181s pivoted and the arm 19 which is connected with the pivotof the stop 18 is adapted to be actuated to swing the finger 20outwardly should the spring 11 fail to disengage the nut section fromthe feed screw. The engagement of the arm 19 with the finger 20 willhold the stop 18 until the slidable operating member 14 moves theslidable stop 12 out of engaging with the nut section if the said spring11 fails to function the continued movement of the carriage will actuatethe pivoted stop and swing the arm 19 and the finger outwardly andthereby disengage the nut section from the f ed screw.

A lever 21 is mounted upon the ca riage 1 and is formed with a segmentextension 22 to engage a notch of the notched plate or strip 7 and holdthe carriage stationary when it is desired to use the ordinaryhand-operated drop-knife to cut off an end of a loin of pork'or for anyother cause. This extension 22 is notched or slotted, as indicated at 23to receive a pin or projection 24 at the side of an arm 25 secured to anend of the shaft 8. When the lever 21 is thrown into engagement with thepart '7, the shaft 8 is rocked to throw the feed nut section 9 clear ofthe feed screw. This arrangement also admits of throwing the lever 21out of engagement with the part 7 when the lever 10 is operated to throwthe nut section 9 into engagement with the feed screw. The lever 21functions as a lock member in conjunction with a fixed part of themachine to hold the carriage stationary. The pin and slot connection24-.23 results in a co-ordinate movement of the parts 21 and 10 whileadmitting of a limited movement to throw the nut section 9 into and outof engagement with the feed screw. By this construction, when the lever21 is'operated to move its portion 22 in engagement with the notchedplate, the arm 25 of the shaft 8 will be oscillated and willsimultaneously move the nut section out of engagement with the feedscrew, and when the nut section is moved into engagement with the feedscrew the arm 25 will be oscillated to carry the portion 22 of the lever21 out of engagement with the notched plate 7.

What is claimed is:

l. The combination with the carriage of a slicing machine and acooperating feed screw of a nut section on the carriage normally heldout of engagement with the feed screw, a stop for holding the nutsection in engagement with the feed screw, said stop being slidablymounted on the carriage and movable in the direction of the movement ofthe carriage, a slidable spring actuated member associated with saidstop and also movable in the direction of the movement of the carriage,a stop in the path of the spring actuated member for automatic actuationthereof to move the nut section engaging stop out of engagement, andmanually operable means for sliding the said spring actuated member atwill to arrest the movement of the carriage.

2. The combination with the carriage of a slicing machine and acooperating feed screw of a nut section on the carriage normally heldout of engagement with the feed screw, a stop for holding the nutsection in engagement with the feed screw, said stop being slidablymounted on the carriage and movable in the direction of the movement ofthe carriage, a slidable mem ber mounted on the carriage and alsomovable in the direction of the movement of the same for actuating theslidable stop, a stop in the path of the slidable member, and a lever onthe carriage for operating the slide member at will to effect a stoppingof the carriage.

3. The combination with the carriage of a slicing machine and acooperating feed screw of a nut section on the carriage normally heldout of engagement with the feed screw, 2. stop for holding the nutsection in engagement with the feed screw an operating member connectedwith the stop, a pivoted stop located in the path of the operatingmember for effecting release of the nut section, and an arm projectingfrom the pivoted stop and engageable with a part of the nut section tohold the pivoted stop for effecting a movement of the operating memberto release the nut section, said arm being also adapted to positivelyassure disengagement thereof from the feed nut.

4. The combination with the carriage of a slicing machine and acooperating feed screw, of a nut section on the carriage, a shaftconnected with the nut section and having an arm, a lock member movablymounted on the carriage engageable with the fixed part of the machine tohold the carriage stationary, and connecting means between the lockmember and the arm of the shaft to cause simultaneous movement of thenut section-and the lock member to disengage the nut section from thefeed shaft when the lock member is moved into engagement with the saidfixed part and to disengage the'lock member therefrom when the nutsection is moved into engagement with the feed screw.

5. The combination with the carriage of a slicing machine and acooperating feed screw, of a nut section on the carriage, a movable lockmember mounted on the carriage and adapted to engage a fixed portion ofthe machine, means for connecting the lock member with the nut sectionfor disengaging the latter from the feed screw when the lock member ismoved into engagement with the said fixed part and to disengage the lockmember therefrom when the nut section is moved into engagement with thefeed screw, a stop to hold the nut section in engagement with the feedscrew, a slide associated with the said stop, a manually operable memberfor actuating the slide at will, a pivoted stop in the path of saidslide, and an arm projectedfrom the pivoted stop and adapted to engage apart. of the nut section to hold the pivoted stop while the slide isbeing actuated and to effect a positive movement of the nut sectionafter the same has been released.

6. In combination with a movable carriage of a slicing machine and acooperating longitudinally extending feed screw for the carriage, of atransversely positionable nut section on the carriage normally yieldablyheld in inoperative position away from engagement with the feed screw byyieldable pressing means associated with the nut section, alongitudinally extending holding stop arranged to overlap said nutsection upon the latter being forced against the pressing effect of theyieldable pressing means into operative position with respect to thefeed screw and which holding stop is arranged to lock the nut section inoperative engagement with the feed screw until the holding stop isforcibly moved from said locking position, said holding stop beingslidably mounted on the carriage and longitudinally movable in respectto the carriage and means providing a stop or abutment that is capableof limited movement and which abutment is arranged for causing movementof the holding stop in a direction to release or unlock the nut sectionand thereby permit movement of the nut section from engagement with thefeed screw upon the carriage moving the member that carries or providessaid slidably mounted locking stop into engagement with said abutment,which last mentioned means that provides said abutment is also providedwith mechanism associated with said abutment and constructed so thatshould the yielding pressing means fail to effect full movement of thenut section to inoperative position in respect to the feedscrewfollowing a release or unlocking of the nut section by the lockingstop whereby the carriage over-travels or tends to do so-there will beeffected a positive and automatic moving of the nut section away fromthe feed screw to inoperative position.

'7. The combination, with a longitudinally movable carriage of a slicingmachine and a cooperating longitudinally extending feed screw alongwhich the carriage moves, of a nut section on the carriage normally heldout of engagement with the feed screw, a stop carried by the carriageand movable with respect to the carriage and arranged for holding thenut section in engagement with the feed screw, means positioned forengagement by a member connected with the stop for effecting a movementof the stop from full nut holding position upon movement of the carriageto a particular position in respect to said means and for causing arelease of the nut section when a suificient movement of the carriagerelative to the stop has been effected whereby the nut section is freeto move from said feed screw engaging position, means comprising aspring associated with said nut section for throwing the nut section outof engagement with the feed screw upon the release of the nut section bysaid stop, and means for positively and automatically moving said nutsection out of engagement with the feed screw should said spring meansfail to operate and should said carriage consequently tend to continueto travel because of such failure of the spring means to operate.

8. The combination with the carriage of a slicing machine and acooperating feed screw, or" a nut section on the carriage movable intoand out of engagement with the feed screw a member on the carriageengageable with a fixed part of the machine to hold the carriagestationary, and means connecting said member with the nut section forcausing simultaneous movement of said member and the nut section todisengage the nut section from the feed screw when said member is movedinto engagement with the fixed part of the machine and to disengage saidmember from said fixed part when the nut section is moved intoengagement with the feed screw,

9. The combination with a carriage of a slicing machine and acooperating feed screw of a nut section on the carriage, a shaftconnected to and movable with the nut section, a locking member on thecarriage adapted to engage with a fixed part of the machine and hold thecarriage stationary and cooperating means between said lock member andthe shaft to effect simultaneous movement of the lock member and the nutsection to disengage the nut section from the feed screw when the locksection engages said fixed part and to disengage the lock section whenthe nut is moved into engagement with the feed screw.

CHARLES T. WALTER.

lit)

